Home / 6,878.78-10,318.56-2,261.78

Finding the Fourth Proportional to 6,878.78, 10,318.56 and 2,261.78

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Solution

The fourth proportional to 6,878.78, 10,318.56 and 2,261.78 is: 3,392.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,878.78 : 10,318.56 = 2,261.78 : x
  2. Step 2: Convert to fraction form
    6,878.78/10,318.56 = 2,261.78/x
  3. Step 3: Cross multiply
    6,878.78x = 10,318.56 × 2,261.78
  4. Step 4: Simplify right side
    6,878.78x = 23,338,312.64
  5. Step 5: Solve for x
    x = 23,338,312.64/6,878.78
  6. Step 6: Final answer
    x = 3,392.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.